There are many reasons an electrical device can make a "pop" sound but it's seldom good news. Either you have a defective power supply, a power supply that's the wrong voltage or had a coincidental short in the computer at that time. My suspicion is that isn't the right power supply for your notebook. "Universal" is a dangerous word when talking about power supplies. It has to be the correct voltage and supply enough current to charge the battery and operate the device.
The adaptor should have on the label, 9.5 Volts 2.315Amps 24Watts
Please verify that's what's on the label.
http://www.laptop-battery-adapter.com/asus-eee-pc-701sd-ac-adapter.html
Answered Dec 14, 2010
Edited Dec 14, 2010
it wasnt the universal one that made it pop it was a compatible one for asus thats the one that made that noise so I took plug back they said it was bearly putting out 5 volts so I ordered one online this is 9.5v 2.5a 24w & it still wont power on please help!
From the popping sound, my advice would be to either take it back to the place you bought it or to a repair person. If you're a gambler you can remove the battery and try again. I wouldn't do that unless someone has put a meter on the power supply to verify that it's putting out 9.5 volts. If it Is, with the battery out, if it does the same thing, there's something defective inside the computer.
thank you rob for taking time out of your schedule & answer my questions. thankful & greatful have a merry christmas!